Stretching-frame.



F. R. MILLER.

I STRETCHING FRAME. APPLICATION FILED JAN.17, 1 911 RENEWED JAN. 19,1912.

1,021,619. Patented Mar.26, 1912.

WITNESSES l/VVAEWTOR,

Ffedar/ 29.162246); BY

, ATTORNEY COLUMBIA PLANOGRAPH (10-. WASHINGTON. D. c.

' UNITED STATES PATENT OFFICE.

FREDERIC' RJMILLER, OF YPRESS.HILLS, NEW YORK.

STRETCHING-FRAME.

Specification of Letters Patent.

Application fi1ed January 17, 1911, Serial No. 663,159. Renewed January19, 1912. Serial No. 672,235.

To all whom it may concern: Be it known that I, FREDERIC R. MILLER, acitizen of the United States, residing at Cypress Hills, in the countyof Queens and State of New York, have invented new and usefulImprovements in Stretching-Frames, of which the following is aspecification.

This invention relates to stretching frames and is especially adaptedfor use in stretching paper for painting, fabric for embroidery work andsimilar uses, and it consists of certain new and simple wings foldingdown against the frame itself and mounted eccentrically so as to clampthe edges of the material to be stretched over the opening in the frameas will be more fully described in the following specification, setforth in the claims, and illustrated in the drawings, wherein,

Figure 1 is a plan View of the frame. Figs. 2, 3 and 4 are sectionalviews showing the operation of the clamping wings. Fig. 5 is an enlargedplan view showing the hinged ends of one of the wings.

The frame consists of a structure 10, preferably of metal and havingaround its outer edge the bead 11 inclosing the wire frame 12. beads 13,made from the material of the frame and partly inclosing metal rods 14,shown in dotted lines in the sectional views. The endsof these rods areprovided with eccentric trunnions 15, which areunited by corner blocks16 which are undercut as at 17 and are riveted to the frame by means ofthe pin 18. The construction of the frame and the arrangement of thesetrunnions is clearly shown in the enlarged sectional views and theclamping of the mate rial to be stretched in the frame is effected bymeans of wings 19 having at each end hooks 20 which are adapted toengage the trunnions 15 and work upon same to produce the clampingeffect. As will be seen in Fig. 2 the wing is substantially upright anddisengaged from the trunnion in order to permit of the entrance of oneedge 21 of the paper or fabric to be stretched. After the insertion ofthe edge of the paper, the lower end of the wing is moved forward,bringing the hook 20 immediately below the The inner edges of the framealso have trunnion. The wing is then thrown down into the positionshownin Figs. 1 and 4t and is then drawn inward by the eccentric actionof the trunnion so as to bring the edge of the paper over the bead 13,and it is then drawn inward by means of the edge 22 of the wing beneaththe inner edge of the bead, gripping the material, crimping and clamping same to the metallic frame.

The wings 19 are grooved in order to strengthen them and the inner edgesof the beads 11 are provided with lugs 23 which hold the wings againstaccidental removal.

At the outer side of the hooks 20 are small lugs 24, which enter therecesses 17 at each side of the corner piece and prevent the removal ofthe wings and their consequent loss. The outer ends of the recesses areclosed to prevent the removal of the wings,

As shown in the sectional views, the in-" ner edges of the beads 13 arecut away to allow just enough room between it and the edge of the wingto admit of the entrance of the material to be stretched while notbearing upon it sufficiently to break or cut it.

The formation of the grooves in the wings raises their ends above theframe so that the finger nail may be inserted to raise them when thematerial is to be removed.

What I claim as new and desire to secure by Letters Patent is,

1. In a stretching frame, the combination with an open frame having aninterior bead, of corner pieces connecting the bead and formingeccentric trunnions, wings with hinges to fit on the trunnions and edgeson the wings to cooperate with the beads and clamp the material to bestretched.

Patented Mar. 26, 1912.

2. In a stretching frame, the combina- In testimony whereof I afiix mysignature tion with an open frame having outer and 1n presence of twoWitnesses. inner beads, hinged Wings With raised ends FREDERIC R.MILLER. cooperating wlth the beads for grlpping and clamping thematerial to be stretched, Witnesses:

and locking means on the beads for hold- GEO. A. SENIOR,

ing the Wings in their clamping position. CHARLES LA RU Copies of thispatent may be obtained for five cents each, by addressing theCommissioner of Patents, Washington, D. C.

